Figure 5

The specificity of electrical stimulation in terms of ERK phosphorylation in the DRG. (a) Representative pictures of pERK in the ipsilateral DRG after electrical stimulation to the right hind paw. Arrowheads indicate pERK-positive DRG neurons. (b) The size distribution of pERK-positive DRG cells (left panel) and its relative comparison to the total number of cells (right panel) in sham-operated and nerve-injured mice. *: p < 0.05 vs. sham. Data represent the means ± S.E.M. from experiments using at least 4 mice. Scale bar = 50 μm.